<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div></div>
    <span></span>
    <strong></strong>

    <script>

        var all = document.getElementsByTagName('*');
        for(var i = 0; i < all.length; i ++) {
            all[i].setAttribute('this-name', all[i].nodeName);
        }




    </script>
</body>
</html>